Earthquake-proofing reinforcing metal fitting

ABSTRACT

A reinforcing holder against vibrations for mounting on orthogonally joined architectural structural members for a wooden building so it can withstand vibrations from an earthquake. The reinforcing holder comprises a first reinforcing base member  1  which is formed on a steel plate bent by 90° and secured to a first architectural structural member and a second reinforcing member  2  formed of a steel plate bent by 90° which is arranged symmetrically with the first reinforcing base member  1  through a hinge  4  and secured to a second architectural structural member. The second reinforcing base member has absorbing members  3 , each having rubber elasticity and being mounted at plurality of locations thereof, for securing to the second architectural structural member with the absorbing members  3  interposed.

TECHNICAL FIELD

The present invention relates to a reinforcing holder against vibrationsmounted on the joining part of structural members such as foundations,columns, beams, cross-beams or the like to reinforce them so that awooden building may not be broken down even if strong vibrations areloaded thereupon by an earthquake, a typhoon or the like.

BACKGROUND ART

So far, as methods for reinforcing the joining parts of structuralmembers of a wooden buildings, there have been various methods employed:providing bracings or horizontal braces or mounting clamps or L-shapedmetal fittings.

However, in such conventional methods as described above, no sufficientreinforcing effect can be obtained in a case where strong vibrations areloaded by an earthquake, a typhoon or the like, and the structuralmembers tend to be easily disjoined or sustain damage in the joiningparts so that wooden buildings sometime may be broken in the joiningparts, or in a severe case, such buildings may fall down.

In view of the foregoing, the reinforcing holder against vibrations 61shown in a perspective view of FIG. 5 has been devised and used in orderto sufficiently withstand even strong vibrations caused by anearthquake, a typhoon or the like.

The reinforcing holder against vibrations 61 comprises an L-shaped basemember 62 formed by bending a plate formed of high tension steel in theshape of an L and formed with bent and swelled parts 63 a and 63 b bentinward in intermediate parts of both pieces 62 a and 62 b, a reinforcingmember 64 formed by bending a plate formed of high tension steel andfixedly mounted by welding on a bent corner part 62 c of the L-shapedbase member 62, and absorbing members 65 formed of shock-absorbingrubber or the like stopped at several locations of the L-shaped basemember 62.

According to the above-described arrangement, both strong vertical andhorizontal vibrations can be absorbed by the whole L-shaped member 62and its bent and swelled parts 63 a and 63 b, and deformation of theL-shaped base member 62 can be removed and the original shape thereofcan be restored. Therefore, even if strong vibrations are loaded, awooden building does not easily break in the joining parts or fall down.

However, the above-described reinforcing holder against vibrations 61 isprovided with the L-shaped base member 62 both piece parts of which areintended to join architectural structural members disposed orthogonallyfor its structural reasons and does not have such a function as to joinarchitectural structural members three-dimensionally.

Further, since the reinforcing member 64 is fixedly mounted by weldingon the L-shaped base member 62, and the bent corner part 62 c of theL-shaped base member 62 and the bent corner part 64 c of the reinforcingmember 64 are placed in close contact, the amount of elastic deformationis small and the effect of removing the deformation of the L-shaped basemember 62 and restoring the original shape thereof is also insufficient.

DISCLOSURE OF INVENTION

The present invention has been accomplished in order to solve suchproblems noted above with respect to prior art. It is an object of thepresent invention to provide a reinforcing holder against vibrationswhich can absorb vertical and horizontal vibrations and verticaloscillations so that a wooden building may not be broken down even ifstrong vibrations are loaded by an earthquake, a typhoon or the like,and the vibration-proof performance of which is much more enhanced, witha reinforcing base member being fixed over to architectural structuralmembers disposed orthogonally.

The present invention is to solve the above-described problem to achievethe object thereof, and provides a reinforcing holder against vibrationsfor joining architectural structural members disposed orthogonally,comprising a first reinforcing base member which is formed of a platebent by 90° and secured to one architectural structural member, and asecond reinforcing base member which is arranged symmetrically with thefirst reinforcing base member through a hinge and secured to anotherarchitectural structural member, characterized in that the said secondreinforcing base member is formed of a plate bent by 90° and absorbingmembers having rubber elasticity are mounted at a plurality of locationsthereof, being secured to another architectural structural memberthrough the absorbing members, and another architectural structuralmember is joined to one architectural structural member.

An intermediate part of the second reinforcing base member is curvedoutward to form a curved and swelled parts or the intermediate part isbent twice outward to form a bent and swelled parts.

It is more preferable that the plate is formed of high tension steelsince it is excellent in tensile strength, weldability, notch toughness,workability and corrosion resistance.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a mounting state in one embodimentaccording to the present invention,

FIG. 2 is a plan view of a mounting state in one embodiment according tothe present invention,

FIG. 3 is an exploded perspective view of various members used in oneembodiment according to the present invention, and

FIG. 4 is a perspective view of another embodiment according to thepresent invention,

FIG. 5 is a perspective view of a conventional reinforcing holderagainst vibrations.

BEST MODE FOR CARRYING OUT THE INVENTION

Preferred embodiments of the reinforcing holder against vibrationsaccording to the present invention will be concretely describedhereinafter with reference to the drawings.

FIG. 1 is a perspective view of a mounting state in one embodimentaccording to the present invention; FIG. 2 is a plan view of a mountingstate in one embodiment according to the present invention, FIG. 3 is anexploded perspective view of various members used in one embodimentaccording to the present invention, and FIG. 4 is a perspective view ofanother embodiment according to the present invention.

As shown in the perspective views of FIGS. 1, 3, and 4, and the planview of FIG. 2, the present invention provides the reinforcing holderagainst vibrations for joining architectural structural members A and Adisposed orthogonally, comprising a first reinforcing base member whichis formed of a plate bent by 90° and secured to one architecturalstructural member, and a second reinforcing base member which isarranged symmetrically with the first reinforcing base member through ahinge and secured to another architectural structural member,characterized in that the said second reinforcing base member is formedof a plate bent by 90° and absorbing members having rubber elasticityare mounted at a plurality of locations thereof, being secured toanother architectural structural member through the absorbing members,and another architectural structural member is joined to onearchitectural structural member.

Further intermediate parts of the second reinforcing base member 2 arecurved outward to form curved and swelled parts 23 having curved faces231, or the intermediate parts are bent twice outward to form bent andswelled parts 24 having plane faces 241. If necessary, a cushion round25 can be formed in an approximately central part of the curved andswelled parts 23 or the bent and swelled parts 24 of the secondreinforcing base member 2.

According to the present invention, the curved and swelled parts 23 orthe bent and swelled parts 24 are formed outside of the intermediateparts of the second reinforcing base member 2, the absorbing members 3having rubber elasticity are mounted at a plurality of locations of thefixed pieces 21, 21, and the second reinforcing base member 2 isvertically, resiliently and rotatably connected with the firstreinforcing base member 1 by the hinge 4, wherefore vertical andhorizontal vibrations and vertical oscillation are absorbed and therestoring force is produced, thus the resistance force againstinclinations or torsions is increased even if strong vibrations areloaded on a wooden building by an earthquake, a typhoon or the like.Further, if necessary, the cushion round 25 is formed in anapproximately central part of the intermediate parts of the curved andswelled parts 23 or bent and swelled parts 24, whereby the absorbingeffect can be further enhanced.

As shown in FIGS. 1, 2, and 4, the present invention provides areinforcing holder against vibrations provided extending over, forexample, a column member A-1 and a beam or a cross-beam member A-2 ofthe architectural structural member A, comprising the first reinforcingbase member 1 secured to the column member A-1 and the secondreinforcing base member 2 arranged symmetrically with the firstreinforcing base member 1 through the hinge 4 and secured to a beam orcross-beam member A-2.

In the first reinforcing base member 1, a plate formed of iron and steelmaterial having both flexibility and rigidity is bent so that a bentangle θ-1 is 90° and both pieces of the first reinforcing base member 1are formed into fixed parts 11 and 11 to be fixed along the surface ofthe column member A-1 and each of the fixed parts is bored with a slot111, and a Ω-like loop shaft support part 12 is formed at the bentcorner part. Though not shown, a tubular shaft support part may beprovided in place of the loop shaft support part 12.

In the second reinforcing base member 2, a plate formed of iron andsteel material having both flexibility and rigidity is bent so that abent angle θ-2 is 90°, on the bent corner part of which is provided atubular shaft support part 22, both pieces of which are formed intofixed pieces 21 and 21 to be fixed to the beam or the cross-beam memberA-2, and an intermediate part of each of the fixed pieces 21 and 21 iscurved outward to form a curved and swelled part 23 having a curved face231, or an intermediate part of the fixed pieces 21 and 21 is bent twiceoutward to form a bent and swelled part 24 having a plane face 241. Ifnecessary, the cushion round 25 is formed in an approximately centralpart of the curved and swelled part 23 or the bent and swelled parts 24.

Further, a plurality of locations of the fixed pieces 21 and 21 of thesecond reinforcing base member 2 are bored with fixed holes 211,respectively, and an absorbing member 3 having rubber elasticity ismounted adjusting to the position of the fixed hole 211.

The absorbing members 3 mounted on the fixed pieces 21 and 21 of thesecond reinforcing base member 2 is formed of shock-absorbing rubberhaving rubber elasticity with excellent elastic characteristics anddurability, the contact surface in contact with an architecturalstructural member A on the back side thereof is bored with slotsadjusting to the fixed holes 211 bored at a plurality of locations ofthe fixed pieces 21 and 21 of the second reinforcing base member 2,enabling fine adjustment of the position of the second reinforcing basemember 2 mounted, and on the surface side thereof is formed with anembracing piece for embracing the fixed piece 21 of the secondreinforcing base member 2.

Preferably, construction steel is employed for the iron and steelmaterial described above, and, more preferably, high tension steel isemployed. High tension steel is obtained by adding to low carbon steel asmall quantity of a suitable combination of alloy elements such asmanganese, silicone, nickel, chrome, molybdenum or the like, andgenerally has tensile strength of not less than 50 kg/mm² and yieldpoint of not less than 30 kg/mm² and is excellent in weldability, notchtoughness, workability and corrosion resistance.

The hinge 4 for resiliently shaft support-connecting the firstreinforcing base member 1 and the second reinforcing base member 2 in avertical direction is then formed, as shown in FIG. 3, by looselyfitting a shaft center bolt 41 in the direction of the arrow from theΩ-like loop shaft support part 12 formed at the bent corner part of thefirst reinforcing base member 1 to the tubular shaft support part 22formed at the bent corner part of the second reinforcing base member 2,screw-mounting a nut 43 on the shaft center bolt 41 projecting from thebottom of the tubular shaft support part 22 through a spring 42, andinsert-mounting a stopper pin 412 into a pin hole 411 bored in the lowerpart of the shaft center bolt 41 directly under the nut 43.

The procedure for mounting the reinforcing holder against vibrations ofthe present invention on the architectural structural member A will bedescribed hereinafter.

As shown in FIGS. 2 and 3, first, the fixed part 11 of the firstreinforcing base member 1 is temporarily fixed to the column member A-1using a fixing part 5 such as screws or nails through the slot 111,after which the tubular shaft support part 22 of the fixed piece 21 ofthe second reinforcing base member 2 is adjusted to the loop shaftsupport part 12 of the first reinforcing base member 1 and the shaftcenter bolt 41 is loosely fitted, the nut 43 is screw-mounted throughthe spring 42 on the shaft center bolt 41 projecting from the bottom ofthe tubular shaft support part 22, and the stopper pin 412 isinsert-mounted into the pin hole 411.

Thereafter, the fixed piece 21 of the second reinforcing base member 21is secured to the beam or the cross-beam member A-2 using the fixingpart 5 through the fixed hole 211 and the slot of the absorbing member3, and, at the same time, the fixing part 5 temporarily secured to thecolumn member A-1 is firmly fixed to complete the mounting work for thereinforcing holder against vibrations of the present invention to thearchitectural structural member A.

According to the present invention, the vertical vibrations between thefirst reinforcing base member 1 secured to the column member A-1 and thesecond reinforcing base member 2 secured to the beam or the cross-beammember A-2 are absorbed by the hinge 4 for resiliently shaft supportconnecting in a vertical direction through the spring 42, and in thesecond reinforcing base member 2, the curved and swelled part 23 or thebent and swelled part 24 and the cushion round 25 are formed andconjointly therewith, and the fixed piece 21 is secured to the beam orthe cross-beam member A-2 through the absorbing member 3 having rubberelasticity, whereby the horizontal vibrations are absorbed and therestoring force is provided. After all, even if strong vibrations areloaded vertically or horizontally on a wooden building by an earthquake,a typhoon or the like, the resistance force against inclinations ortorsions can be increased.

Since the reinforcing holder against vibrations of the present inventionis constituted as described above, the following effect is obtained.

That is, according to the present invention, the vertical or horizontalvibrations and vertical oscillations applied to the architecturalstructural member are absorbed and the restoring force is amplified,thus providing the operation and effect that even if the strongvibrations are loaded on a wooden building by an earthquake or the like,the resistance force is increased to further enhance the vibration-proofperformance.

1. A reinforcing holder against vibration for joining architecturalstructural members disposed orthogonally comprising: a first reinforcingbase member formed of a plate bent by 90° and adapted to be secured toone architectural structural member; and a second reinforcing basemember arranged symmetrically with the first reinforcing base member andadapted to be secured to another architectural structural member; ahinge joining said first reinforcing base member to said secondreinforcing base member; characterized in that the second reinforcingbase member is so designed that the plate is bent by 90° and absorbingmembers having rubber elasticity are mounted at a plurality of locationsthereof, said second reinforcing base member being adapted to be securedto another architectural structural member with the absorbing membersinterposed, whereby the said another architectural member can be joinedto the said one architectural structural member.
 2. The reinforcingholder as recited in claim 1 wherein an intermediate part of the secondreinforcing base member is curved outward to form a curved and swelledpart.
 3. The reinforcing holder as recited in claim 2 wherein the saidplate is formed of high tension steel.
 4. The reinforcing holder asrecited in claim 1 wherein an intermediate part of the secondreinforcing base member is bent twice outward to form a bent and swelledpart having a plane surface.
 5. The reinforcing holder as recited inclaim 4 wherein the said plate is formed of high tension steel.
 6. Thereinforcing holder as recited in claim 1 wherein the said plate isformed of high tension steel.
 7. A reinforcing holder against vibrationfor joining architectural structural members disposed orthogonallycomprising: a first reinforcing base member formed of a plate bent by90° and defining an interior angle plate surface having a bent part,said interior angle plate surface being adapted for securing to a firstarchitectural structural member; and a second reinforcing base memberformed of a plate bent by 90° and defining an exterior angle platesurface having a bent part, said exterior angle plate surface beingadapted to be secured against a surface of a second architecturalstructural member; and a hinge joining said first reinforcing basemember to said second reinforcing base member such that said secondreinforcing base member is arranged symmetrically with respect to thefirst reinforcing base member; wherein the second reinforcing basemember comprises a plurality of absorbing members having rubberelasticity mounted at a plurality of locations thereof and being adaptedto be interposed between said exterior angle plate surface and saidsecond architectural structural member.
 8. The reinforcing holder asrecited in claim 7 wherein said hinge joining said first reinforcingbase member and second reinforcing base member comprises a pin extendingalong said bent part of said first reinforcing base member and said bentpart of said second reinforcing base member.
 9. The reinforcing holderaccording to claim 7 wherein said hinge at said bent part of at leastone of said first reinforcing base member and second reinforcing basemember comprises an Ω-like loop shaft support part.
 10. The reinforcingholder as recited in claim 7 wherein said hinge at said bent part of atleast one of said first reinforcing base member and second reinforcingbase member comprises a tubular shaft support part.